1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31f6414712c1a9070a2eaf3b29e54b82687552baa516b6c17c451e36ea60f82c. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ad652156-17f4-40d0-85cb-440224e509f1.json and https://artists.proofprofile.net/proofs/artist/ad652156-17f4-40d0-85cb-440224e509f1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c7895c27f423d95a80bbfb2f84e6d2df56b369b0be358424237ef2d67f66af. Chain 2 (Bitcoin): anchored in block 957695 (2026-07-12T11:16:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6G2057766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c21fa3002da6737f781afc28c2ab48526355e7bf7a4790ec7c07e12f97f9a45. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWU2099731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf541d1f083f54f39f5b81c59a23786c6736032bc989b8c1e43b6d2b3afa5c14e. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUMEV2263130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92154e346e1b1f4b950dc21bf79055552448662ff6b7fe8c87a09c1b2693f5e4. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUMEV2363619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b22b72443f34e95c7e941ab9eb9e3c88373bfb290336f0388c689759fce2fcc. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUGBT2343265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedcbf7367f13ab7d4bbcd2342e57e7e7e89bdffc6df9b9d98eb3cd0880048fd8. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:59:18Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUGBT2359084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e9b2f08921821ddfb36ded861cbc087e3394f545b185838f7c35292983fec7. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUMEV2432185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef7b1ab175ed6f2817648577b404d8b00d99e882f7211827381e60a06e13675. Chain 2 (Bitcoin): anchored in block 957680 (2026-07-12T09:07:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUMEV2475325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x873e87281005c46d17c73d2a6648a243753548778f37c3d5ded67747f253dd35. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUGBT2429076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58f29e493e5b731810657c266c39ff0cb61266cd8237861f5429aac0ded0c595. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUGBT2454731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe3906d5bf156a0ade1f38da8af31ec54493da9cf3e441b7fea9a879435f191d. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUQ9D2400251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd85eb5e68f3a2e0d468777842c991c4d58e4ecd9827ad4964b2b21693d67cb99. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUMEV2523545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe3906d5bf156a0ade1f38da8af31ec54493da9cf3e441b7fea9a879435f191d. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUQ9D2400251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a795555d9d260871d4e33fc3615e8ec46ed23063785c92b18ae8486b5174241. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUMEV2552895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bc285f3756e90cf9bb5c62de2299ef13d43df3db49c13115173c2074213e44f. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUGBT2454730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcde8ac258034c9ed9991425212543d06042d8803efe4bbbe62cef997109a2e06. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUMEV2573043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd85eb5e68f3a2e0d468777842c991c4d58e4ecd9827ad4964b2b21693d67cb99. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:34:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUMEV2523545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81254b49c0524595fb91740473d096517c103391f5083e4f23c0412a8bea2996. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUGBT2506870.